WAEC - Agricultural Science (2013)

  • 1
    To facilitate mechanical harvesting of cereals, it is better to
    Trả lời
    (C)
    ensure they all have uniform height
  • 2
    One of the problems facing agricultural development in West Africa is
    Trả lời
    (A)
    inadequate financing
  • 3
    What action of government may be considered as granting of subsidies to farmers?
    Trả lời
    (C)
    Supplying agrochemicals at reduced cost
  • 4
    Which of the following are advantages of the communal land ownership system? l. Every member of the community has a piece of land on which of farm.ll. Co-operative farming is possible under this system. III . Large scale farming is encouraged . IV Land can be used as a security for loans.
    Trả lời
    (A)
    l and ll only
  • 5
    A socio-economic factor which affects the availability of land for agricultural use in West Africa is
    Trả lời
    (B)
    population growth
  • 6
    Which of the following factors affects the onset of flowering in crops?
    Trả lời
    (A)
    Atmospheric pressure
  • 7
    Marble is a metamorphic rock formed from
    Trả lời
    (A)
    limestone
  • 8
    Which of the following statements best describes sediment rocks?
    Trả lời
    (A)
    pre-existing rocks in which the original mineral has undergone change
  • 9
    The rock weathering process involving the equation; CaCO3 + H2CO3 → Ca(HCO3)2 is called
    Trả lời
    (C)
    hydrolysis
  • 10
    When compost is added to said, it
    Trả lời
    (C)
    increases water-holding capacity of the soil
  • 11
    Soils can become acidic as a result of the continuous application of
    Trả lời
    (A)
    single superphosphate
  • 12
    Which of the following species of bacteria lives symbiotically in root nodules of legumes?
    Trả lời
    (D)
    Rhizobium
  • 13
    Plant nutrients are restored during the fallow period through
    Trả lời
    (B)
    accumulation of soil organic matter
  • 14
    The processes by which animals release carbon dioxide into the air are
    Trả lời
    (A)
    respiration and decay
  • 15
    Which of the following practices leads to land degradation in the savanna zones of West Africa? l. Constant annual bushfire ll. Overgrazing of grassland lll. Application of cattle manure. IV. Cutting of woody species for fuel wood
    Trả lời
    (B)
    l, ll and lV only
  • 16
    a 100kg NPK 15: 15: 15 compound fertilizer has a filler make -up weight of
    Trả lời
    (D)
    55kg
  • 17
    One of the main disadvantages of mechanical tillage is the
    Trả lời
    (C)
    use of heavy equipment leading to soil compaction
  • 18
    Which of the following factors affect the work rate of draught animals? l. Feed intake ll. Breed of animal III. Harness for hitching. IV. Height of animal
    Trả lời
    (D)
    l, ll, lll and IV
  • 19
    Which of the following features could lead to wrong reading on a prismatic compass?
    Trả lời
    (D)
    MAGNETIC ATTRACTION
  • 20
    WHICH OF THE FOLLOWING STEPS GIVES A CORRECT SEQUENCE FOR SURVEYING A FARMSTEAD?
    Trả lời
    (C)
    preliminary survey → reconnaissance → mapping
  • 21
    The characteristic of draught animals which does not influence traction effort is
    Trả lời
    (D)
    meat quality
  • 22
    The branch of horticulture that deals with the production of vegetables is called
    Trả lời
    (B)
    olericulture
  • 23
    Pruning is carried out to 1. control the size of the plants ll. obtain clean and attractive fruits III. ensure correct spacing of trees
    Trả lời
    (B)
    l and lll only
  • 24
    Which of the following characteristics is not true of tree species used in alley cropping?
    Trả lời
    (B)
    Regenerate rapidly after pruning
  • 25
    Insect damage to crops takes the from of
    Trả lời
    (D)
    chewing , sucking and piercing
  • 26
    One disadvantage of vegetative propagation is that
    Trả lời
    (B)
    viral diseases are transferred to offspring
  • 27
    Which of the following factors should be considered when sowing seeds in the field? l. Time of sowing ll. Plant density III. Depth of sowing. lV. Method of sowing.
    Trả lời
    (D)
    l, ll, lll and IV
  • 28
    Which of the following groups require winnowing during processing?
    Trả lời
    (B)
    Cereals
  • 29
    A farmer who plants African Marigold between his crops has the intention of controlling
    Trả lời
    (C)
    fungi
  • 30
    If the spacing of a crop is 3.6m X 4. 5m, determine the crop population per hectare
    Trả lời
    (B)
    617
  • 31
    An example of a piercing and sucking insect-pest of crops is a
    Trả lời
    (A)
    mealy bug
  • 32
    Calculate the number of yam setts planted at a spacing of 1.0m by 1.0m on a hectare of land
    Trả lời
    (D)
    10,000 setts
  • 33
    If rows are spaced 1.0m apart with one plant per stand, determine the spacing between stands in order to obtain a plant population of 40,000/ha
    Trả lời
    (C)
    0.50m
  • 34
    Some plants are suitable for decorating living rooms because of their
    Trả lời
    (A)
    ability to endure low light intensity
  • 35
    Cappling and staking are important cultural practices in the cultivation of
    Trả lời
    (C)
    yams
  • 36
    An important function of mulching is that it
    Trả lời
    (C)
    conserves moisture in the soil
  • 37
    The removal of shealth on maize cob is referred to as
    Trả lời
    (A)
    winnowing
  • 38
    The removal of sheath on maize cob is referred to as
    Trả lời
    (C)
    dehusking
  • 39
    Which of the following sequences describes the steps in making hay?
    Trả lời
    (A)
    Cut, dry and bale
  • 40
    One disadvantage of using bamboo troughs water for poultry is that they
    Trả lời
    (B)
    are susceptible to algal growth
  • 41
    The characteristic odour in billy goats can be removed through
    Trả lời
    (D)
    dipping
  • 42
    A cattle breed in West Africa tolerant to trypanosomiasis is
    Trả lời
    (C)
    N' dama
  • 43
    A consequence of pasture littered with polythene materials is that
    Trả lời
    (B)
    the alimentary canal of farm animals could be blocked
  • 44
    Which of the following statements about colostrum is false? it is
    Trả lời
    (A)
    an evaporated milk
  • 45
    Meat obtained from cattle of less than one year old is called
    Trả lời
    (C)
    veal
  • 46
    Which of the following characteristics is not important in beef cattle production? l. Increased butter-far percentage ll. High feed conversion efficiency. III. High yield of lean meat
    Trả lời
    (A)
    l only
  • 47
    The following are systems of mating in farm animals: l. stud mating ll. artificial insemination. lll. pen mating IV herd mating
    Trả lời
    (C)
    l,ll,lll and IV
  • 48
    A disease of rabbit caused by a protozoan is
    Trả lời
    (D)
    milk fever
  • 49
    The common name of Axonopus compressus is
    Trả lời
    (A)
    carpet grass
  • 50
    Which of the following groups of cattle are tropical breeds?
    Trả lời
    (B)
    N' dama, Sokoto Gudali and Muturu
  • 51
    Heat in farm animals can be detected by the following signs except
    Trả lời
    (B)
    low blood temperature
  • 52
    The following substance are excretory products in farm animals except l. blood ll. sweet lll. urine
    Trả lời
    (A)
    l only
  • 53
    The following are signs of ill-health in farm animals except`
    Trả lời
    (D)
    increased appetite
  • 54
    Which of the following factors should be considered when building a rabbit hutch? l. safety and comfort of rabbits ll. ease of maintenance and cleaning lll day length
    Trả lời
    (A)
    l and ll only
  • 55
    Which of the following organs forms a barrier between an animal and its external environment?
    Trả lời
    (D)
    Skin